package com.alibaba.seckill.utils;

import org.apache.commons.codec.digest.DigestUtils;

/**
 * Md5工具类
 */
public class MD5Util {

    public static String md5(String src) {
        return DigestUtils.md5Hex(src);
    }

    private static final String salt = "1a2b3c4d";

    public static String inputPassToFormPass(String inputPass) {
        String str = "" + salt.charAt(0) + salt.charAt(2) + inputPass
                + salt.charAt(5) + salt.charAt(4);
        return md5(str);
    }

    public static String formPassToDBPass(String formPass, String salt) {
        String str = "" + salt.charAt(0) + salt.charAt(2) + formPass + salt.charAt(5)
                + salt.charAt(4);
        return md5(str);
    }

    public static String inputPassToDbPass(String inputPass, String saltDB) {
        String formPass = inputPassToFormPass(inputPass);
        String dbPass = formPassToDBPass(formPass, saltDB);
        return dbPass;
    }

    public static void main(String[] args) {

        System.out.println(inputPassToFormPass("cs473209761"));
        System.out.println(formPassToDBPass(inputPassToFormPass("f33987406ad0a3b55bea7e194a931bb1"),
                "1a2b3c4d"));
        System.out.println(inputPassToDbPass("cs473209761", "1a2b3c4d"));
    }
}
